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Northwest Africa 4558
Basic information Name: Northwest Africa 4558
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 4558
Observed fall: No
Year found: 2006
Country: (Northwest Africa)
Mass:help 900 g
Classification
  history:
Meteoritical Bulletin:  MB 92  (2007)  L4
Recommended:  L4    [explanation]

This is 1 of 2012 approved meteorites (plus 4 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 24 Jul 2007
Data from:
  MB92
  Table 2
  Line 102:
Place of purchase:Erfoud, Morocco
Date:2006
Mass (g):900
Pieces:1
Class:L4
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):24.5
Ferrosilite (mol%):21.6
Wollastonite (mol%):1.8
Classifier:T. Bunch, NAU
Type spec mass (g):25.7
Type spec location:NAU
Main mass:Cimala
Institutions
   and collections		 NAU: Geology, Bldg 12 Knoles Dr Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 92, MAPS 42, 1647-1694 (2007)
Find references in NASA ADS:
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Polandmet   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Dirk Hohmann   
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 9116 approved meteorites from (Northwest Africa) (plus 1873 unapproved names)

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